Hoist-gearing.



J. DAVIDOFF.

HOISI GEARING.

APPLICATION man. on. IS. m1.

Patented July 23, 1918.-

2 SHEETS-SHEET 1 mvs'uron d Daz'z'd off or @TLZM @W A TTORNEYS m: non-1sInnu 00.. morournm. wuumomu. a.

UNITED STATES v JOSEPH navnborr, or B'BooKLYmNEw YORK;

p 7 noIsT-GEABINd' 7 Specificationof was Patent.

1 Application filed October 15, 1917. Serial No. 196,692.

To all whom it may concern:

Be it known that I, JOSEPH DAVIDOFF, a

citizen of the United States, and a resident of the city of NewYork,borougl1 of Brooklyn, in the county of Kings and State of New York,have invented a new and Improved Hoist- Gearing, of which the followingis a full, clear, and exact description. i

The object of the invention is to provide a new andimproved portablehoisting machine more especiallydesignedfor use on dwellings and likestructures for hoisting ash cans and other loaded receptaclesout of acellar onto the sidewalk and to return the empty receptacles to thecellar. Another object is to permit of conveniently removing thehoisting machine after use to be out of the way of the passingpedestrians.

In order to accomplish the desired result use is made of a frame, ahollow shaft journaled in the said frame, manually controlled. means forturning the said hollow shaft, a hoisting drum mounted to rotate looselyon the said hollow shaft and provided with an internal gear wheel,-'asingle and a double gear wheel mounted on the said frame and in meshwith the said internal gear wheel, a pinion slidable on the said hollowshaft and turning therewith, and manually controlled shifting meansconnected with the said pinion to shift thesame lengthwise on the saidhollow shaft into engagement with either of the said 'singlegear wheelsor the double gear wheel.

A practical embodiment of the invention is represented in theaccompanying drawings forming a part of this specification, inwhich'similar characters of reference indicate corresponding parts inall the views.

Figure 1 is a side elevation of the hoisting machine;

Fig. 2 is a plan view of the same;

Fig. 3 is an enlarged sectional side elevation of the same on the line33 of Fig. 4; and

Fig. 4 is an inverted sectional plan view of the same on the line 4-4 ofFig. 3. i

The frame 10 of the hoisting. machine is adapted to be mounted to swingon a bracket 11 by the use of a pivot pin 12 held removably on thebracket 11. The bracket llis bolted or otherwise secured to the side ofa house or other support 13 at a point above the opening in'the sidewalkleading to a cel-. lar. On the frame 10 is journaled a hollow PATENTOFFICE, i

. Patented any 23, 1918-41 shaft 14 on which is mounted to turn looselya hoisting drum 15 providedwith the usual peripheralgroove 16 engaged bya'hoisting rope17 for hoisting a filled receptacle-from the cellar to'the sidewalk or lowering an empty receptacle from thesidewalk into thecellar, as hereinafter more fully explained.

The drum 15 is provided with two'flanges 18 and 19, of which-"thevflange 19 is pro vided with an outwardly-extending'rim 20. provided01111381111161 facewith an internal gear; wheel 21' inmesh with two gear:wheels' 22 and=23, of which-the gearwheel 22 rotates loosely on a stud24 secured to the frame 10. The other gear wheel 23fforms part-ofanother gear wheel 25 of largerdiameter thus providinga double gear=wheel 'mounted to 7 turn'loosely on'a stud 26attached. to the frame 10.The gear wheel 25 extends'out side offthe rim-2O and isthus out of theplane of the other gear wheel 22, andeithers' gear wheel 25 or 22 isadapted to-be engaged by a pinion 30 mounted to turn with andto slidelengthwise on the hollow shaft14.-v For this purpose use is made of akey andkeyway 31 (see Fig.3), anduse is alsomade of a cotter pin 32.held onthe pinion Y30 and extending through a longitudinal. slot 33'formed in the hollow shaft 14wThe cotter pin 32 extends into an openingformed in a shiftingrod 35 mounted" to slidealengthwisez,

within the hollow shaftxl4. .The -re'ar,- end of the shifting shaft35rextends beyondthe rear end of-the hollow shaft 14'and' on' this rearend of the shifting shaft 35 is'arranged a shifting collar 40 engagedbyone end of-a shifting. lever 41 fulcrurned at 42;:01

bracket 43 secured to or forming part of.

the: frame 10. A handle 44 :is connected with the shifting lever-41 andismounted to a slide in an open bearing 45 attached to the I frame 10.-The handle 44-is providedwith two notches 46 and 47- adapted to. dropinto face with spaced apertures 51 adapted-to be engaged by'a.spring-pressed tapering pin 52 mountedto slide in a crank arm- 53 havingits hub 54partly divided and mount-ed to turn looselyon thehollow-.fshaft 14 as the v fulcrum. The spring pressed pin 52 is pro-.

vided with a' handle55 adapted to be taken hold. of by the user to slidethe spring pressed pin 52 outwardjout ofengagement with thecorresponding aperture 51 and to then engage the handle 55 with anangular notch 56 formed in the crank arm 53 to hold the pin 52 inwithdrawn position when it is desired to let the drum 15 run loosely forlowering a load. Normally, however, the Pin 52 is in engagement with anaperture 51 of the wheel 50 and when the crank arm 53 is turned in thedirection of the arrow 00, shown in Fig. 1, then a rotary motion isgiven to the ratchet wheel. 50 and to the hollowv shaft 14, the shaft 35and the pinion 30. The hub 54 of. the crank arm 53 is held inposition,on. the hollow shaft 14 by a cap nut 57 screwing on the forward end ofthe hollow. shaft 14.

On moving the handle, 44 forwardly a rearward sliding movement is givento the shifting, shaft-35., whereby the pinion30 is. movedintoengagementwiththe gear wheel 25, and'when-the crank arm 53is now turned a rotarymotion is transmitted to the double gear wheel 25-, 23, and as the.latter is in mesh with the internal gearwheel 21- it is evident thatthedrum 15 is rotated in the. direction of, t-he arrow y to wind up onend of therope117 witha View to raisingv the ash "can or other heavy'load out of the cellar up ontothe sidewalk. In case a light load is toberaised then the handle 44 is shifted; farther forwarda tomove thepinion 30 out of mesh with the gear wheel 25 and into mesh with the gearwheel 22, and whenthe crank arm53is now turned in the direction of thearrow 00 then arotary motion is given tothe drumat. ahigher rate ofspeed and likewise in the direction of'the arrow y to raise a lighterload.

When the pinion 30 is. in mesh with the gear wheel 25 and it is desiredto disconnect said: pinion from the gear wheel 25 with a view-to allowthe drum 15 to rotate loosely then thehandle 44 is moved rearwardly ashort distance to move the pinion 30 for-- wardly into a recess 60formedin the frame 10. When the pinion 30 is, however, in mesh with the gearwheel 22, as previously explained, and it is desired to allow the drum15 to rotate loosely for lowering an empty can then a further forwardmovement is given to the handle 44 to move the pinion 30 rearwardly intoa recess 61 formed in the front face of the drum 15 (see Fig. By thisarrangement it is not necessary to shift the pinion 30a long distancewhen it is desired to, move it outof engagement with either gear wheel25- or the gear wheel 22 to allow the drum to'rot-ate loosely forlowering an empty receptacle into the cellar.

In order to prevent too fast unwinding of the rope 1T whenlowering theempty receptacle into the cellar, use is made of a brake band,e-Xtending around the rim 20 and secured at one end by screws 71 orother fastening-means-tothe frame 10 (see Figs.

'whiclrextends a brake lever 73 fulcrumed at its rear end at 74 to the fmile 10. The forward end of the lever 73 extends within the path of thecrank arm 53 so that when the latter is turned in the direction of thearrow :0 it lifts the: brake lever 73, then passes the same and allowsit to return to normal position. When, however, the crank arm 53 isswung in the inverse direction of the arrow 00 then it bears down on thebrake lever 73 to draw the brake band 70 tight on the rim 20-thusbraking the hoisting drum 15. When the crank arm 53 bears on the brakelever-73 the operator can retract the pin 52 relative to the wheel 50 toallow the drum 15 to run loosely on the hollow shaft 14 when loweringanempty receptacle into the cellar, the speed.- of the drum being con--trolled by. the brake band. V

In order to permit easy and safe shifting of theshaft 35 and pinion .30,as above de scribed, the operator swings the crank arm in the directionof they arrow 1 to bear. down on the brake lever 73 and; thus apply thebrake band 70 on.the rim 20 thereby slightly is suspended-ontheropel'l', as the drum 15. is held againstturning by.the brakemechanism controlled by the crank arm After the hoisting of the-filledreceptacle and the lowering-of theempty receptacle is. accomplished, theuser withdraws the pivot pin 12 from the bracket; 11 and the frame 10 toallow removal of the hoisting machine. and storing'thereof: until it is.desired to again use the same at a future time. It will be noticed thatby the arrangement described. the hoistingmachine is portableaml can bereadilyplaccd in position o for, use er-.- re-. moved .to be completelyout of the way of the pedestrians passing along the sidewalls From theforegoing it will he soon that the operator by having hold: of: thecrank arm 53 canturn the-hoisting drum 1 3, for hoisting a light or aheavy load from the cellar to the sidewalk, and the crank arm 53 also srves to .controlthe brake mechanism to allow of checkingthe speed of thedrain 15 when lowering-an empty can or receptacle from the sidewalk tothecellar.

Having thus described my invention, 1 claim new and desire to secure by.Letters Patent 1.. A hoisting machine, comprising a frame, a hollowshaftjournaleclon the said shaft and the pinion-30 even when a load."

frame,- manually controlled turning means for turning the said shaft, ahoistingdrum mounted to rotate loosely on the said hollow shaft andprovided with an internal gear wheel, a single and" a double gear wheelmounted on the said frame and in mesh with the said internal gear wheel,a pinion slidable on the said hollow shaft and turning therewith, andmanually controlled shifting means connected with the said pinion toshift the same lengthwise on the said hole low shaft into engagementwith either the said single gear wheel or the double gear wheel.

2. A hoisting machine, comprising a frame, a hollow shaft journaled onthe said fran'ie, manually controlled turning means for turning the saidhollow shaft, a hoisting drum mounted to rotate loosely on the saidhollow shaft and provided with an internal gear wheel, a single and adouble gear wheel mounted on the said frame and in mesh with the saidinternal gear wheel, a pinion slidable on the said hollow shaft andturning therewith, a shifting shaft slidable in the said hollow shaft, apin connecting the said pinion with the said shifting shaft, and ashifting lever fulcrumed on the said frame and pivotally connected withthe said shifting shaft.

3. A hoisting machine, comprising a frame, a hollow shaft journaled onthe said frame, manually controlled turning means for turning the saidshaft, a hoisting drum mounted to rotate loosely on the said hollowshaft and provided with an internal gear wheel, a single and a doublegear wheel mounted on the said frame and in mesh with the said internalgear wheel, a pinion slidable on the said hollow shaft and turningtherewith, a shifting shaft slidable in the said hollow shaft, a pinconnecting the said pinion with the said shifting shaft, and a shiftinglever fulcrumed on the said frame and pivotally connected with the saidshifting shaft to shift the latter and with it the pinion to engage thesaid pinion with either the said single gear wheel or the double gearwheel, the said hollow shaft having a slot through which extends thesaid pin.

4. A hoisting machine, comprising a frame, a hollow shaft journaled onthe said frame, manually controlled turning means for turning the saidhollow shaft, a hoisting drum mounted to rotate loosely on the saidhollow shaft and provided with an internal gear wheel, a single and adouble gear wheel mounted on the said frame and in mesh with the saidinternal gear wheel, a pinion slidable on the said hollow shaft andturning therewith, manually controlled shifting means connected with thesaid pinion to shift the same lengthwise on the said h0llow shaft intoengagement with either the the said frame, and a brake lever'fulcrumed,

on the said frame and e'ngagingfthe free end of the said brake band, thesaid brake lever being controlled by the said turning means.

5. A hoisting machine, comprising a frame provided with a recess, ahollow drum shaft journaled'in the said frame and extending centrallythrough the said recess, the said hollow shaft having a slot,a-hoistingdrum mounted to turn loosely on the said hollow shaft andprovided with an internal gear Wheel and with a recess through whichextends centrally the said hollow shaft, a single gear wheel in meshwith the said internal gear wheel, a double gear wheel of which one issmaller than the other, the smaller gear wheel being in mesh with thesaid internal gear wheel, a pin mounted to slide on and to turn with thesaid hollow shaft and adapted to engage either of the said recesses orthe said single gear wheel or the larger gear Wheel of the double gearwheel, a shifting shaft slidable in the said hollow drum shaft, a pinconnecting the said pinionwith the said shifting shaft, the pinextending through the slot in the said recess, and means connected withthe said shifting shaft to shift the latter lengthwise in the saidhollow shaft.

6. A hoisting machine, comprising a frame provided with a recess, a drumshaft journaled in the said frame, a drum mounted to rotate loosely onthe said drum shaft and provided with an internal gear wheel and with acentral recess, the said drum shaft extending centrally through bothrecesses, a single gear wheel mounted on the frame and in mesh with thesaid internal gear wheel, a double gear wheel mounted on the'frame andhaving a small and a large gear wheel of which the, small gear wheel isin mesh with the said internal gear wheel, a pinion mounted to turn Withand to slide on the said drum shaft and adapted to engage either of thesaid recesses, or the said single gear wheel or the large gear wheel ofthe double gear wheel, means for rotating the said drum shaft, and meansfor shifting the said pinion.

7. A hoisting machine, comprising a hoisting drum, a brake for the sameand having a brake lever, a gearing for turning the said drum, and a pinand wheel mechanism having a demountablecrank arm and connected with thesaid gearing, the said brake lever extending into the path of the saidcrank arm.

8. A hoisting machine, comprising a drum, a brake mechanism for the saiddrum, a gearing for rotating the said drum and having a shiftablemember, means for shifting for turning the' said shiftable member andadapted to engage the said brake mechanism to apply the same-for holdingthe drum against rotation While shifting :the said shiftable member.

9. A holstlng machine, comprising a drum provided With an internal gearWheel, a

gear Wheel in mesh with the said internal gear Wheel a plmon adapted tobe moved in mesh With the said gear Wheel, a crank 10 by the said crankarm to lock the drum in 15 place while shifting the said pinion.

JOSEPH DAVIDOFF.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

7 Washington, DJG.

